🧒 Explain like I'm 5
Imagine you want to borrow a toy from a friend's house. Before you can take it, you ask your friend's parents if it's okay. If they say yes, you can borrow it. This is like CORS, where your browser checks with a server if it's okay to access its data.
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Senior-level deep dive: internals, pitfalls, and a self-interview ladder.
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